sure enough is an adverb meaning "as supposed or expected". It carries 2 recorded senses.
as supposed or expected
“sure enough, he asked her for money again”
definitely or positively (`sure' is sometimes used informally for `surely')
“the results are surely encouraging”
“she certainly is a hard worker”
“it's going to be a good day for sure”
“they are coming, for certain”
“they thought he had been killed sure enough”
“he'll win sure as shooting”
“they sure smell good”
“sure he'll come”
colloquialism
Definitions, synonyms and semantic relations for sure enough come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.